Reserve pages answer specific disclosure questions: what the issuer reports, when the information is dated, how often it is refreshed, and what an independent accountant examined. They do not by themselves establish that a token will always trade at par, that every holder can redeem immediately, or that the issuer has had a full financial-statement audit. This comparison summarizes the issuers’ own published descriptions; it does not rank safety.
Open Tether’s transparency page · Open Circle’s USDC transparency page
What the issuer pages say
| Disclosure question | Tether (USDT) | Circle (USDC) |
|---|---|---|
| Circulation information | Tether says circulation metrics are typically refreshed daily. Its transparency page warns that available information may be delayed and may not reflect circulation at the time you view it. | Circle’s transparency page shows circulation and reserve information with an “as of” date, and describes weekly reserve holdings disclosure alongside mint and redemption flows. |
| Reserve composition reporting | Tether says it typically publishes quarterly reserve reports with information on reserve assets and provides asset-category information in those reports. | Circle describes weekly reserve holdings disclosures. Its page groups reserves into bank deposits, deposits at systemically important institutions, overnight reverse Treasury repo, and short-dated Treasuries; consult the dated disclosure for the actual values and definitions. |
| Third-party reporting described by issuer | Tether’s FAQ says quarterly reserve reports are prepared by BDO Italia, an independent third-party accounting firm, under criteria established by the IAASB. | Circle says a Big Four accounting firm provides monthly third-party assurance that USDC reserves exceed circulation, with reports prepared under AICPA attestation standards. Its historical explanation distinguishes monthly attestations from an annual audit of Circle’s financial statements. |
| How to compare two records | Match the report date, token and issuer, circulation measure, reserve categories, valuation basis, report scope, accountant’s conclusion, and any stated qualifications. A daily circulation figure and a quarterly reserve report are different dated observations; they should not be presented as a same-time coverage ratio. | |
The cadence and scope above summarize issuer statements checked on 2026-11-03. Open each dated report before relying on a particular balance or conclusion; the issuer pages and report links can change.
How to review a reserve disclosure
- Confirm the token and legal issuer. Symbols can be used for assets on different networks or issued by different entities. Follow the issuer’s own token and report links.
- Record the “as of” date. Compare circulation and reserve amounts from matching report dates when the report permits it. Note publication dates separately from measurement dates.
- Read the composition, not only the total. Check the listed asset categories and how the report describes valuation, custody, counterparties, maturities, or other relevant details. Do not infer an undisclosed category or asset quality.
- Read the independent accountant’s actual report. Identify the specific assertion examined, applicable criteria or standards, period or point-in-time date, conclusion, and qualifications. “Attestation,” “examination,” and “audit” describe different engagement scopes; a monthly reserve attestation is not automatically an audit of all issuer operations or controls.
- Check redemption terms separately. A reserve report is not a promise that every holder can redeem directly with the issuer. Review eligibility, minimums, fees, jurisdictions, and current terms with the issuer or intermediary you would use.
What reserve reports cannot settle
A point-in-time reserve report cannot guarantee future liquidity, market price, access to banking or redemption, or the value of assets after its measurement date. It also does not on its own describe every liability, operational dependency, legal claim, smart-contract risk, or exchange-market condition. Read the complete report and its scope instead of treating a reserve total as a universal solvency opinion.
For an independent comparison, save the original report, note the date and accounting scope, and repeat the review when a newer report appears. This page contains no live balance feed and makes no claim about current reserve adequacy.
Official issuer sources
- Tether Transparency — circulation information, reports, reserves, and bridges.
- Tether FAQ: transparency reporting frequency and reserve reports — Tether’s description of daily circulation updates and quarterly reports prepared by BDO Italia.
- Circle Transparency & Stability — dated reserve composition, circulation, weekly disclosure, and monthly assurance information.
- Circle: How to Build Trust — Circle’s explanation of the difference between reserve attestations and financial-statement audits.
Reviewed 2026-11-03. Sources are issuer-published descriptions; this educational guide is not an audit, solvency assessment, or recommendation.
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